Briidea 500ft Wireless Mailbox Alarm with LED Light

Mailbox Alarm, Briidea 500ft Wireless Mailbox Alert with LED Light Flashing and Sound Reminders WHY CHOOSE US? Are you sick of making a dozen-a-day trips to the mailbox? Are you still worried about mail being stolen? With briidea mailbox alarm wireless long range, you'll know immediately when your mail has arrived. It saves a lot of wasted time to the mailbox to check for mail, and it can also prevent your mail from stolen, make your life become easier SUPER COVERAGE: It easily achieves an 500ft wireless range in the open area. Even if goes through 5 walls, doors, and others, the transmitting distance also can reach 300ft. Sensor unit is powered with two AAA batteries (not included), ultra-low power consumption, no need for frequent replacement, save your time and effect ALARM FUNCTION: When the mailbox door is opened, the receiver in the house will buzz 10 times, and a red LED light will flash. Allows for volume control and reset of alarm SAFE PROTECTION & EASY INSTALLATION: The